Hi
@Sammy100333
Whatever you do you'll have to deal with dinosaurs, or maybe that is just me, and I'm past getting the help you are seeking to give or assist. I can only speak from my experience of one person to care for (other than me), for 7 years so far.
In the early stages of my OH's Alz's
a) the local authority adult social services handed me a paper booklet. This had lots of info, phone numbers, website addresses, names of charities and other societies that offered help if I wanted to contact the. So I looked up a few to find out physical activities that might be of interest for my OH - singing for the brain weekly group, the memory cafe had meetings weekly, but a waiting list, the church had a group for carers and PWD once a month, and of course we had our own interests - going to gardens, going to garden centres, walks in the woods round our village, going to the supermarket for weekly shop was a social outing for my OH, I invited friends round for tea and a biscuit and a chat, etc.
b) in between the above I was also looking after the house - cleaning, vacuuming; doing the washing and drying; doing the garden, preparing and cooking the meals, the washing and drying up, making the appointments with dr and outpatient's dept, etc
c) in between the above I had my own interests - reading, listening to music, my Rotary Club activities. And sometimes we watched TV.
d) my OH had her interests - reading, playing music, gardening, TV
I don't think we are/ were terribly abnormal, and that the above might cover many retired couples struck down by dementia. /caring / etc. I kept a diary, that I changed to our kitchen calendar and notice board and my phone schedule.
I didn't miss not having an app for this. Many of the above activities were ad hoc and spontaneous, or weather dependent, etc.- you now - it's dry and sunny, I'll wash the car. or I'll cut the grass, etc.
As my OH's Alz's progressed - in just a few years - as she became less able to do things in the house, or out of the house, things changed. Her attention span lessened, her dexterity lessened, this made her frustrated and less willing to try and do things. Thus activities I could offer her or suggested dwindled in both variety and time. She became less amenable and slept longer during the day. All the other things to be done in and around the house, garden, shopping, meals, etc remained the same. The medical appointments have greatly lessened.
My need to do things for me has grown rather than diminished (as I've now been lonelier for longer), but has to be fitted round everything else, if there's any time left.
I keep a list of medications up-to-date for both of us in case a copy is needed by the District Nurse, or an ambulance paramedic but nobody seems to need want or care about any personalised care info for either of us.
Maybe we're just past the help you are trying to devise. The carers we now have, have been trained. The sitter I have weekly has been trained. I don't think the care or the accompanying sitter would work otherwise.
Best wishes.